TMI/PHOTO INCLUDED! Is this implantation bleeding, from plan b/birth control

I had intercourse twice while on my first pack of my birth control. I was only on my second week(Second week, third day) I took plan b three hours before 72 hours were over.

I started to have pain in my urinating and pink residue when I wipe. When I say pain IT WAS PAIN. Could this be implantation? Or a UTI? I’ve been having to pee so much and it hurts. NOTE: I TOOK MY PILLS MIDCYCLE.